<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    p {
      font-family: 'Courier New', Courier, monospace;
    }
  </style>
</head>

<body>
  <p class="p1">this is p1</p>
  <p class="p2">this is p2</p>
  <p class="p3">this is p3</p>

</body>

</html>